A Study of the $Δ^-$-component of the wave-function in light nuclei

Details A Study of the $Δ^-$-component of the wave-function in light nuclei A Study of the $Δ^-$-component of the wave-function in light nuclei

1999-12-08

arxiv.org/abs/nucl-ex/9912004v3

Phys.Lett. B523 (2001) 1-5

Physics

Nuclear Physics

Nuclear Experiment

3 pages, 3 figures, 1 table

Scientific paper

10.1016/S0370-2693(01)01329-6

We have measured cross sections for the $ (\pi^+,\pi^\pm p)$ reactions on ${\rm ^3H}$, ${\rm ^4He}$, ${\rm ^6Li}$ and ${\rm ^7Li}$ in quasi-free kinematics at incident pion beam energy 500 MeV. An enhancement of the $(\pi^+,\pi^- p)$ cross section in this kinematics is observed. If this is interpreted as due to quasi-free scattering from pre-existing $\Delta$ components of the nuclear wave function, the extracted probabilities are in agreement with theoretical expectations.

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